PDXT_STAAT
ID PDXT_STAAT Reviewed; 186 AA.
AC A8YZL6;
DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT 15-JAN-2008, sequence version 1.
DT 03-AUG-2022, entry version 78.
DE RecName: Full=Pyridoxal 5'-phosphate synthase subunit PdxT {ECO:0000255|HAMAP-Rule:MF_01615};
DE EC=4.3.3.6 {ECO:0000255|HAMAP-Rule:MF_01615};
DE AltName: Full=Pdx2 {ECO:0000255|HAMAP-Rule:MF_01615};
DE AltName: Full=Pyridoxal 5'-phosphate synthase glutaminase subunit {ECO:0000255|HAMAP-Rule:MF_01615};
DE EC=3.5.1.2 {ECO:0000255|HAMAP-Rule:MF_01615};
GN Name=pdxT {ECO:0000255|HAMAP-Rule:MF_01615};
GN OrderedLocusNames=USA300HOU_0512;
OS Staphylococcus aureus (strain USA300 / TCH1516).
OC Bacteria; Firmicutes; Bacilli; Bacillales; Staphylococcaceae;
OC Staphylococcus.
OX NCBI_TaxID=451516;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=USA300 / TCH1516;
RX PubMed=17986343; DOI=10.1186/1471-2180-7-99;
RA Highlander S.K., Hulten K.G., Qin X., Jiang H., Yerrapragada S.,
RA Mason E.O. Jr., Shang Y., Williams T.M., Fortunov R.M., Liu Y., Igboeli O.,
RA Petrosino J., Tirumalai M., Uzman A., Fox G.E., Cardenas A.M., Muzny D.M.,
RA Hemphill L., Ding Y., Dugan S., Blyth P.R., Buhay C.J., Dinh H.H.,
RA Hawes A.C., Holder M., Kovar C.L., Lee S.L., Liu W., Nazareth L.V.,
RA Wang Q., Zhou J., Kaplan S.L., Weinstock G.M.;
RT "Subtle genetic changes enhance virulence of methicillin resistant and
RT sensitive Staphylococcus aureus.";
RL BMC Microbiol. 7:99-99(2007).
CC -!- FUNCTION: Catalyzes the hydrolysis of glutamine to glutamate and
CC ammonia as part of the biosynthesis of pyridoxal 5'-phosphate. The
CC resulting ammonia molecule is channeled to the active site of PdxS.
CC {ECO:0000255|HAMAP-Rule:MF_01615}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=aldehydo-D-ribose 5-phosphate + D-glyceraldehyde 3-phosphate +
CC L-glutamine = H(+) + 3 H2O + L-glutamate + phosphate + pyridoxal 5'-
CC phosphate; Xref=Rhea:RHEA:31507, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29985, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:58273, ChEBI:CHEBI:58359, ChEBI:CHEBI:59776,
CC ChEBI:CHEBI:597326; EC=4.3.3.6; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01615};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + L-glutamine = L-glutamate + NH4(+);
CC Xref=Rhea:RHEA:15889, ChEBI:CHEBI:15377, ChEBI:CHEBI:28938,
CC ChEBI:CHEBI:29985, ChEBI:CHEBI:58359; EC=3.5.1.2;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01615};
CC -!- PATHWAY: Cofactor biosynthesis; pyridoxal 5'-phosphate biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_01615}.
CC -!- SUBUNIT: In the presence of PdxS, forms a dodecamer of heterodimers.
CC Only shows activity in the heterodimer. {ECO:0000255|HAMAP-
CC Rule:MF_01615}.
CC -!- SIMILARITY: Belongs to the glutaminase PdxT/SNO family.
CC {ECO:0000255|HAMAP-Rule:MF_01615}.
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DR EMBL; CP000730; ABX28538.1; -; Genomic_DNA.
DR RefSeq; WP_000690439.1; NC_010079.1.
DR AlphaFoldDB; A8YZL6; -.
DR SMR; A8YZL6; -.
DR MEROPS; C26.A32; -.
DR KEGG; sax:USA300HOU_0512; -.
DR HOGENOM; CLU_069674_2_0_9; -.
DR OMA; VFIRAPI; -.
DR UniPathway; UPA00245; -.
DR GO; GO:0004359; F:glutaminase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0036381; F:pyridoxal 5'-phosphate synthase (glutamine hydrolysing) activity; IEA:UniProtKB-UniRule.
DR GO; GO:0006543; P:glutamine catabolic process; IEA:UniProtKB-UniRule.
DR GO; GO:0042823; P:pyridoxal phosphate biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd01749; GATase1_PB; 1.
DR Gene3D; 3.40.50.880; -; 1.
DR HAMAP; MF_01615; PdxT; 1.
DR InterPro; IPR029062; Class_I_gatase-like.
DR InterPro; IPR002161; PdxT/SNO.
DR InterPro; IPR021196; PdxT/SNO_CS.
DR PANTHER; PTHR31559; PTHR31559; 1.
DR Pfam; PF01174; SNO; 1.
DR PIRSF; PIRSF005639; Glut_amidoT_SNO; 1.
DR SUPFAM; SSF52317; SSF52317; 1.
DR TIGRFAMs; TIGR03800; PLP_synth_Pdx2; 1.
DR PROSITE; PS01236; PDXT_SNO_1; 1.
DR PROSITE; PS51130; PDXT_SNO_2; 1.
PE 3: Inferred from homology;
KW Glutamine amidotransferase; Hydrolase; Lyase; Pyridoxal phosphate.
FT CHAIN 1..186
FT /note="Pyridoxal 5'-phosphate synthase subunit PdxT"
FT /id="PRO_1000088059"
FT ACT_SITE 75
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01615"
FT ACT_SITE 165
FT /note="Charge relay system"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01615"
FT ACT_SITE 167
FT /note="Charge relay system"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01615"
FT BINDING 46..48
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01615"
FT BINDING 101
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01615"
FT BINDING 129..130
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01615"
SQ SEQUENCE 186 AA; 20630 MW; FBBCAA090EA74FF7 CRC64;
MKIGVLALQG AVREHIRHIE LSGHEGIAVK KVEQLEEIEG LILPGGESTT LRRLMNLYGF
KEALQNSTLP MFGTCAGLIV LAQDIVGEEG YLNKLNITVQ RNSFGRQVDS FETELDIKGI
ATDIEGVFIR APHIEKVGQG VDILCKVNEK IVAVQQGKYL GVSFHPELTD DYRVTDYFIN
HIVKKA
